Exhaust gas turbocharger module and internal combustion engine outfitted therewith

Abstract

An exhaust gas turbocharger module and internal combustion engine outfitted therewith are disclosed. The exhaust gas turbocharger modules have an individual turbocharging assembly with a low-pressure exhaust gas turbocharger with a low-pressure turbine and a low-pressure compressor which have a common first turbocharger axis. A high-pressure exhaust gas turbocharger is provided with a high-pressure turbine and a high-pressure compressor which have a common second turbocharger axis extending perpendicular to the first turbocharger axis. The low-pressure turbine is connected downstream of the high-pressure turbine via an exhaust gas connection line, and the high-pressure compressor is connected downstream of the low-pressure compressor via a charge air connection line. A housing receives the low-pressure turbine, the high-pressure turbine and the exhaust gas connection line. The low-pressure compressor, the high-pressure compressor, and the charge air connection line are arranged outside of the housing.

We claim: 
     
       1. An exhaust gas turbocharger module for an internal combustion engine, comprising:
 turbocharging assembly that includes: 
 a low-pressure exhaust gas turbocharger including a low-pressure turbine and a low-pressure compressor, the low-pressure turbine and the low-pressure compressor having a common first turbocharger axis extending in a first direction; 
 a high-pressure exhaust gas turbocharger including a high- pressure turbine and a high-pressure compressor, the high-pressure turbine and the high-pressure compressor having a common second turbocharger axis extending in a second direction, the first and second directions being perpendicular to one another; 
 an exhaust gas connection line via which the low-pressure turbine is connected downstream of the high-pressure turbine; 
 a charge air connection line via which the high-pressure compressor is connected downstream of the low-pressure, compressor; and 
 a housing shaped to receive the low-pressure turbine, the high-pressure turbine, and the exhaust gas connection line, wherein at least the exhaust gas connection line is arranged with respect to the housing so as to be inside of and surrounded by the housing, wherein low-pressure compressor, the high-pressure compressor, and the charge air connection line are arranged outside of the housing, and 
 wherein the turbocharging assembly forms the only turbocharging assembly of the exhaust gas turbocharger module, wherein the turbocharging assembly includes an exhaust gas bypass line arranged inside the housing and which connects an exhaust gas input of the high-pressure turbine to an exhaust gas input of the low-pressure turbine, and wherein a blocking valve is arranged in the exhaust gas bypass line for selectively opening and closing the exhaust gas bypass line, 
 the high-pressure turbine is connected on an input side to an exhaust gas outlet line of the internal combustion engine, and 
 the high-pressure compressor is connected on an output side to a charge air input line of the internal combustion engine. 
 
     
     
       2. The exhaust gas turbocharger module according to  claim 1 , wherein the turbocharging assembly includes a charge air intercooler arranged outside of the housing and connected into the charge air connection line. 
     
     
       3. The exhaust gas turbocharger module according to  claim 1 , wherein:
 the first turbocharger axis defines a line in a first plane, 
 the second turbocharger axis defines a line in a second plane, and 
 the second plane is parallel to and spaced apart from the first plane at a predetermined distance. 
 
     
     
       4. The exhaust gas turbocharger module according to  claim 1 , wherein the housing is formed of three parts so that the housing has two housing dividing planes extending parallel to one another and at a distance from one another. 
     
     
       5. An exhaust gas turbocharger module for an internal combustion engine, comprising:
 a turbocharging assembly that includes: 
 a low-pressure exhaust gas turbocharger including a low-pressure turbine and a low-pressure compressor, the low-pressure turbine and the low-pressure compressor having a common first turbocharger axis extending in a first direction; 
 a high-pressure exhaust gas turbocharger including a high-pressure turbine and a high-pressure compressor, the high-pressure turbine and the high-pressure compressor having a common second turbocharger axis extending in a second direction, the first and second directions being perpendicular to one another; 
 an exhaust gas connection line via which the low-pressure turbine is connected downstream of the high-pressure turbine; 
 a charge air connection line via which the high-pressure compressor is connected downstream of the low-pressure compressor; and 
 a housing shaped to receive the low-pressure turbine, the high-pressure turbine, and the exhaust gas connection line, wherein at least the exhaust gas connection line is arranged with respect to the housing so as to be inside of and surrounded by the housing, wherein the low-pressure compressor, the high-pressure compressor, and the charge air connection line are arranged outside of the housing, and wherein the turbocharging assembly forms the only turbocharging assembly of the exhaust gas turbocharger module, 
 wherein the turbocharging assembly includes an exhaust gas bypass line arranged inside the housing and which connects an exhaust gas input of the high-pressure turbine to an exhaust gas input of the low-pressure turbine, and wherein a blocking valve is arranged in the exhaust gas bypass line for selectively opening and closing the exhaust gas bypass line, 
 the high-pressure turbine is connected on an input side to an exhaust gas outlet line of the internal combustion engine, 
 the high-pressure compressor is connected on an output side to a charge air input line of the internal combustion engine, and 
 wherein the charge air connection line extends from the low-pressure compressor to the high-pressure compressor in such a way that an axis defined by the charge air connection line forms a triangle with the first turbocharger axis and the second turbocharger axis in a projection in a common plane with the first turbocharger axis and the second turbocharger axis. 
 
     
     
       6. An internal combustion engine, comprising:
 a plurality of cylinders; and 
 at least one exhaust gas turbocharger module comprising:
 a turbocharging assembly that includes:
 a low-pressure exhaust gas turbocharger including a low-pressure turbine and a low-pressure compressor, the low-pressure turbine and the low-pressure compressor having a common first turbocharger axis extending in a first direction; 
 a high-pressure exhaust gas turbocharger including a high-pressure turbine and a high-pressure compressor, the high-pressure turbine and the high-pressure compressor having a common second turbocharger axis extending in a second direction, the first and second directions being perpendicular to one another; 
 an exhaust gas connection line via which the low-pressure turbine is connected downstream of the high-pressure turbine; 
 a charge air connection line via which the high-pressure compressor is connected downstream of the low-pressure compressor; and 
 a housing shaped to receive the low-pressure turbine, the high-pressure turbine, and the exhaust gas connection line, wherein at least the exhaust gas connection line is arranged with respect to the housing so as to be inside of and surrounded by the housing, wherein the low-pressure compressor, the high-pressure compressor, and the charge air connection line are arranged outside of the housing, and wherein the turbocharging assembly forms the only turbocharging assembly of the exhaust gas turbocharger module, 
 wherein the turbocharging assembly includes an exhaust gas bypass line arranged inside the housing and which connects an exhaust gas input of the high-pressure turbine to an exhaust gas input of the low-pressure turbine, and wherein a blocking valve is arranged in the exhaust gas bypass line for selectively opening and closing the exhaust gas bypass line, 
 the high-pressure turbine is connected on an input side to an exhaust gas outlet line of the internal combustion engine, and 
 the high-pressure compressor is connected on an output side to a charge aft input line of the internal combustion engine. 
 
 
 
     
     
       7. The internal combustion engine according to  claim 6 , wherein:
 a quantity of the cylinders is integrally divisible by four, and 
 the at least one exhaust gas turbocharger module includes a quantity of exhaust gas turbocharger modules that corresponds to the quantity of cylinders divided by four so that one exhaust gas turbocharger module is provided for every four cylinders. 
 
     
     
       8. The internal combustion engine according to  claim 7 , wherein:
 the cylinders of the internal combustion engine are arranged in at least one cylinder row along a longitudinal axis of the internal combustion engine, and 
 the quantity of exhaust gas turbocharger modules are arranged along the longitudinal axis of the internal combustion engine in a module row. 
 
     
     
       9. The internal combustion engine according to  claim 8 , wherein the quantity of exhaust gas turbocharger modules is arranged on an upper side of the internal combustion engine in such a way that each charge air connection line traverses the longitudinal axis of the internal combustion engine. 
     
     
       10. The internal combustion engine according to  claim 9 , further comprising:
 a respective charge air aftercooler provided for each cylinder row, wherein each charge air aftercooler is arranged at a longitudinal end of the internal combustion engine and is connected on the input side to a charge air output of the high-pressure compressor and on the output side to charge air inputs of the cylinders of the internal combustion engine. 
 
     
     
       11. The internal combustion engine according to  claim 10 , wherein:
 the cylinders of the internal combustion engine are arranged in two cylinder rows which are parallel to one another and axially symmetrical with respect to the longitudinal axis of the internal combustion engine, and 
 the charge air input line includes a charge air manifold which extends between the two rows of cylinders along the longitudinal axis of the internal combustion engine and is connected to the charge air output of each high-pressure compressor. 
 
     
     
       12. The internal combustion engine according to  claim 11 , wherein:
 the charge air manifold branches at the longitudinal end of the internal combustion engine into two charge air branch lines which are connected in each instance to one of the charge air aftercoolers, 
 the charge air input line for each of the two cylinder rows has a charge air distributor line connected to the respective charge air inputs of the cylinders of the internal combustion engine, and 
 the charge air aftercoolers are connected on the output side in each instance to one of the charge air distributor lines. 
 
     
     
       13. The internal combustion engine according to  claim 12 , wherein the charge air manifold extends below each charge air connection line of the exhaust gas turbocharger modules.